TOTO developed "Cefiontect Technology: the technology of preventing the dirt suitable for the toilet bowl etc.", and "HYDOROTECT Technology: the technology of preventing the dirt adapting the photocatalyst reaction." By using such technology, the number of times of cleaning is reduced, detergent is cut down, and it can reduce to the water consumption for cleaning. Furthermore, the air can also be purified. Here, the outline and effect of each technology are reported. Moreover, TOTO offers an impressive line-up of water-saving and power-saving type equipment. Large water saving can be performed by combining a watersaving type equipment. Simultaneously, discharge of carbon dioxide is greatly reducible. Here, The environmental-preservation effect and economical effect by using a water-saving instrument in a residence are reported.